Astronomers from areas in the northern latitudes developed different constellations and maps of the sky than their southern counterparts, as faint stars weren't visible to them. In the 18th and 19th centuries, there weren't constellations in the southern hemispheres, so astronomers, instead, invented them.
Dialect. Dialect is one of the multiple forms of the same language. If a new dialect is created from a language it has the potential to become a language of its own.
